Finding them in the field was always a cool experience. The Pitcher Plants were very local in specific small areas, and so uncommon that we became familiar with many tiny individual patches or even individual plants.
Sundews grew in great abundance only 20 meters or so from our back deck. They were so tiny that I never noticed them for the first couple of years we summered there! When I discovered them, I was ecstatic.
We also had considerable growth of aquatic Bladderworts in some quiet backwaters. I had this stuff in my fishtanks for years; always tried to observe the capture of Daphnia or copepods by the bladder traps...never saw it happen...